Evertz Microsystems Ltd.

Download PDF

520AD4-DD-HD

HD/SD-SDI Audio De-embedder, Dolby E/AC-3 Decoder & Re-embedder

VistaLINK® enabled Dolby Partner

The 520AD4-DD-HD Audio De-embedder and Dolby Decoder & Re-embedder extracts embedded audio from 2 specified groups as defined by SMPTE 299M from a 1.5Gb/s serial HDTV or as defined by SMPTE 272M from a 270Mb/s serial SDTV video signal.

One selected channel is processed by the on-card Dolby Decoder. If the channel contains Dolby E or Dolby Digital (AC3), it will yield up to 8 additional discrete audio channels and the associated Dolby E metadata. Up to 8 selected channels may be optionally delayed up to 3 seconds and re-embedded onto output video and/or directed to 4 AES outputs. Video output may be optionally delayed up to 7 frames to help with lip sync. If PCM audio is embedded, the device acts as a simple 2 group audio de-embedder.

This device also handles the Dolby E Metadata. Metadata is optionally embedded in VANC and can be provided as an output for downstream devices (ie. Dolby Encoders, Multichannel Audio Tool, etc.). Dolby E is capable of carrying LTC data embedded within its stream. It can be selected as an output, instead of metadata.

For lip sync cohesion and ease of editing, Dolby E data is organized in blocks with lengths matching the associated video frame. The decoder will match the beginning of each output block with the start of video, as provided with the genlock input. Additional delay can be dialed up by the user, up to 3 seconds. An extra AES input is provided that can be configured as a backup channel, in case of the loss of primary, or as the source of voice-over. This input can be re-configured as a metadata input which can be embedded in VANC, instead of the metadata coming from the Dolby Decoder.

VistaLINK® enables control and configuration capabilities via Simple Network Management Protocol (SNMP). This offers the flexibility to manage the module status monitoring and configuration from SNMP enabled control systems such as Evertz VistaLINK® PRO locally or remotely.

The 520AD4-DD-HD is housed in the 3RU 500FR exponent frame that will hold up to 16 modules.

Features

  • Automatic switchover to backup audio source on loss of selected Dolby stream
  • Adjustable video delay to match Dolby decoder audio delay (up to 7 frames)
  • Headphone jack with monitoring stereo down-mix
  • Dolby Metadata is embedded in HD VANC for downstream device decoding (refer to 520AD4-HD)
  • Secondary AES input with backup, voice-over or Dolby E/AC-3 content
  • Card edge display for Dolby decoder status & audio channel peak levels bargraphs
  • Flexible audio channel router
  • VistaLINK® capable for remote monitoring via SNMP (using VistaLINK® PRO) when installed in 500FR frame with 500FC VistaLINK® Frame Controller
  • Controls
  • Audio group selection
  • Audio channel selection
    • Inputs
    • Program output bypass relay protected
    • SMPTE 292M - (1.5Gb/s serial digital), or SMPTE 259M
    • Genlock NTSC-M, PAL-B, any tri-level
    • AES input for backups/voice-over source
    • Metadata
    • Outputs
    • 2 processed HD outputs (1 protected with bypass relay)
    • 4 AES de-embedded and processed outputs
    • 1 BNC configurable as LTC or Dolby Metadata (RS-422/485)
    • Card Edge LED's
    • Module Status
    • Video Signal presence
    • Selected audio group presence/errors
    • Dolby decoder processing status
    • Genlock health/compatibility
    • AES signal presence
Block Diagram Block Diagram

Specifications

Serial Video Input
StandardSMPTE 292M, (1080i/60, 1080i/59.94, 1080i/50, 1080p/30(sF), 1080p/29.97(sF), 1080p/25(sF), 1080/24(sF), 1080/23.98(sF), 720p/60, 720p/59.94, 1035i/60, 1035i/59.94)
SMPTE 259M-C (270Mb/s) 525 or 625 line component
Number of Inputs1
ConnectorBNC per IEC 61169-8 Annex A
EqualizationAutomatic 100m @ 1.5Gb/s with Belden 1694 (or equivalent), 25m with bypass relay active
Serial Video Output
StandardSame as input
Number of Outputs2
ConnectorBNC per IEC 61169-8 Annex A
Signal Level800mV nominal
DC Offset0V ±0.5V
Rise and Fall TimePer standard
Overshoot< 10% of amplitude
Wideband Jitter< 0.2UI
MetadataEmbedded according to SMPTE 2020M
Metadata Input/Output
TypeDolby E Metadata SMPTE RDD6
Number of Ports2
ConnectorBNC per IEC 61169-8 Annex A (BNC to DB9 dongles are provided)
Baud Rate115,200 baud
AES Audio Input
StandardSMPTE 276M
Number of Inputs1
ConnectorBNC per IEC 61169-8 Annex A
Level0.1V to 2.5V p-p (5V p-p tolerant)
Impedance75Ω
Return Loss> 25dB, 100kHz to 6MHz, with external termination
EqualizationAutomatic to 1000m with Belden 1694A (or equivalent) @ 48kHz AES signal
Sampling Rate48kHz ±100ppm
AES Audio Output
StandardSMPTE 276M, single ended AES
Number of Outputs4
ConnectorBNC per IEC 61169-8 Annex A
Sampling Rate48kHz
Impedance75Ω
ResolutionUp to 24 bits
Genlock Input
TypeNTSC, PAL, black, or any tri-level, all autodetect
Number of Inputs1
ConnectorBNC per IEC 61169-8 Annex A
Impedancehi-Z or 75Ω (jumper configurable)
Return Loss> 40dB to 10MHz
System Performance
AC3 Decode Delay32ms nominal
Dolby E Decode Delay1 frame nominal
De-embedding Latency600µs nominal
Additional Audio Delay0s to 3s (user programmable)
Additional Video Delay0 to 7 frames (user programmable)
Electrical
Voltage+12V DC
Power10 Watts
EMI/RFIComplies with FCC Part 15 Class A, EU EMC Directive
Physical
Number of Slots1

Ordering Information

520AD4-DD-HDHD/SD-SDI Audio De-embedder, Dolby E/AC-3 Decoder & Re-embedder
Enclosures
500FR3RU exponent Compact High Density Distribution Frame
S501FR500 Series Standalone Enclosure
Accessories
500FCVistaLINK® Frame Controller
CP-2116E-HRemote Control Panel
CP-2232ERemote Control Panel
About Us | Contact | Support © 2012 Evertz Microsystems, Ltd. All rights reserved webmaster@evertz.com